A pacemaker system adapted to delivery pacing pulses in the presence of tachycardia or bradycardia. The pacing pulses are delivered via large surface area electrodes of the type normally used to accomplish defibrillation or cardioversion. Delivery of pacing pulses using the large surface area electrodes...http://www.google.co.uk/patents/US5243978?utm_source=gb-gplus-sharePatent US5243978 - Method and apparatus for wide area antitachycardia pacing
